Sets the pixel values in an image.
image-access-transfer-to-image sets the pixel values in an image object from the values in a corresponding Image Access object
image-access must be an Image Access object returned by make-image-access.
image-access-transfer-to-image transfers the pixel data from
the window system, though it might do nothing on platforms where the window system allows direct access to the pixel data.
CAPI User Guide and Reference Manual (Macintosh version) - 3 Aug 2017